1. the act of two men sword fighting with their dicks while only wearing a shirt. 2. the preferred way for Scientologist to boost their Thetan level.

"Lord Xenu froze the aliens and dropped them into the Hawaiian volcano's because of the excessive shirt cock sword fighting!"
"We all shit ourselves when we saw two Mormon Missionaries jump off their bikes, partially undress & start shirt cock sword fighting to see who gets to ring the next doorbell."
"John Travolta was recently seen shirt cock sword fighting Tom Cruise for a parking space at the Scientology Center in Hollywood."